Rotary fountain brush



F. G. JONES.

ROTARY FOUNTAIN BRUSH.

APPLICATION FILED um. 20, 1H9.

Patented Jan. 17, 1922.

UNITED STATES PATENT OFFICE.

ROTARY FOUNTAIN BRUSH.

Specification of Letters Patent.

Patented Jan. 17. 1922.

Application filed December 26, 1919. Serial No. 347,366.

To a u'lmmz'tmuy concern l e. it known that I, Fos'rnn G. JONES, a citizen of the l nited States, and residing in the borough of Pitcairn, in .the county of Allegheny, and State of Pennsylvania, have invented or discovered new, useful and Improved Rotary Fountain Brushes, of which the following is a specification.

My invention consists of a new and improved rotary fountain brush which, while useful for general cleansing and similar purposes, is especially intended for washing vehicles and for like uses.

The object which I have in view is the provision of a brush of this character which will operate successfully with a wide range of water pressures, to suit all service conditions and requirements, including a very low pressure which is impractical with the types of rotary fountain brushes now on the market.

Thus, my improved brush can be advantageously used at very low pressure for cleansing highly finished surfaces, such as automobile bodies, without danger of injuring the finish.

In the accompanying drawings, Fig. lis a longitudinal, central sect-ion of my improved brush, the handle being broken off and the remainder of the latter shown in elevation in Fig. 2; Fig. 3 is a sectional view taken along the line IIIIII in Fig. 1 Fig. 4 is a view similar to Fig. 3, but showing a. modification, while Fig. 5 is an enlarged detail of a portion of the structure shown in Fig. 4.

The following is a detailed description of the drawings, reference being first had to Figs. 1, 2 and 3.

A is the casing cylindraceous in form and having its front end closed by a removable cover B detachably held in lace by bolts 1. 2 is a. water inlet port at t e perimeter of said casing preferably entering at substantially the forwardly inclined angle shown, and communicating with a coupler 3, integral with a casing and internally threaded to receive the end of the short pipe 4 upon which is mounted the wooden handle or grip 5. Thus the handle is set at a very convenient angle. The outer end of said pipe is provided with a coupler 6 for the attachment of the water supply hose, not shown.

The cover B is provided with an outlet passage 7 cast therein and leading from the perimeter of the casing A, substantially diametrically opposite the inlet port 2, and discharging into the circumferential enlargement, forming an annular chamber 8, in the axial bearing 9 in said cover.

C is the main or driven shaft of the motor journaled in the bearing 9 and having integral therewith or rigidly attached thereto in the interior of the casing B a circumferentially enlarged head 10. 11 is a gland packing screwed into the threaded outer end of the bearing 9 about the shaft C. 12 are radial slots or seats cut in the head 10, alined diametrically in pairs, and the members of a pair being connected by the pin bearings 1.3 intersecting the axis of the head. 14 are the motor blades mounted in said seats 12 and slidable radially therein, and 15 are pins mounted in the bearings 13 and spacing the blades apart and holding them into proper engagement with the wall of the casing A. The outer edges of the blades are grooved as at 16 to seat the L-shape leather washers 17 which trail against the wall of the casing as the motor blades revolve. In the drawings the head is assumed to revolve clockwise.

The portion of the shaft C outside of the interior of the casing A is provided with an axial bore 18 extending to the outer end of said shaft, and communicating at its inner end with the annular chamber 8 by radial ports 19 in the wall of the shaft. The outer end of the shaft C is exteriorly threaded to be screwed into the coupler 20 on the butt end of the hollow brush stock D. Said stock is provided with the usual groups of radially set bristles 21 set in holes 22, and between which groups said stock is provided with the radially set water ports 23.

It is evident that when water under pressure is admitted to the casing A through the port 2, the motor will be driven, revolving the brush and causing the water to escape in jets through the ports 23 between the bristle groups, thus providing a most eflicient cleansing utensll.

In Figs. 4 and 5, I have shown the casing A cylindrical, instead of cylindraceous, in which case I reduce one end of each of the pins 15 and mount thereon helical springs 24 which bear outwardly against the edge of the adjacent motor blade 14, thus in effect connecting the members of a pair of blades with a resiliently, expanding pin, thereby insuring snug contact between the wall of the casing and outer edges of the blades.

My brush has the advantage, among others;' that it requires but light pressure to drive it, thereby especially fitting the brush for use in washing highly finished surfaces which would be 5 oiled by the application of water under tie pressure necessary to drive other forms of fountain brushes. The structure of m brush is simple and inexpensive, inclu es no element or elements likely to get out of order or lose their efficiency. The handle 5, set at substantially the angle shown, and forming part of the hose connection, makes my brush portable and very convenient to use as only one hand is required for. its use.

What I desire to claim is:

A rotary fountain brush structure comprising a motor casing provided with a motor chamber, said casing having a water inlet-and a water outlet, a shaft extending into said casing axially of said chamber, said shaft being provided with an axial bore extending into said water outlet and communicating therewith by radial ports in the wall of said shaft, a rotor mounted on said shaft in said motor chamber, and a fountain brush mounted on the protruding end of said shaft, said brush having a hol low stock whose interior communicates with the bore of said shaft and whose Wall is perforated for the discharge of water.

Signed at Pittsburgh, Pa., this 20th day of Dec. 1919.

FOSTER G. JONES. 

